1987: It's late summer and a time of change when a 17-year-old girl leaves the local shopping center in the sleepy town of Lowbridge and is never seen again. Her unsolved disappearance is never far from the town's memory. There's those who grew up in the shadow of her loss whose own lives were altered forever, and those who know more than they're saying. It just takes an outsider to ask the right questions.

Gemma Hayden has returned to her hometown of Alice Springs for a new job as a primary school teacher. It's been six years since her family broke apart following the disappearance of her twin brother. And the scars still run deep. Hard on the heels of her homecoming, Saul Pearce, the man she once loved, is reposted from Parks and Wildlife in Darwin back to Alice. When an old car wreck is uncovered, washed down the river to Ruby Gap, Saul investigates only to find that the wreck belonged to Ethan, Gemma's twin - and there's a coded note for her in the glovebox.

Summer, 2000. In the tranquil town of Queen's Point in southern Australia, the Whitlam family marks the end of every season with a lavish party in their clifftop mansion. Here, clutching her first glass of real champagne, the summer breeze intoxicating on her skin, sixteen-year-old Lucy Ross is kissed for the very first time. And then, in the shadows of the rose garden, she sees something she shouldn't.

DS Lucas Walker is on leave in his hometown, Caloodie, looking after his dying grandmother. When two young German backpackers vanish from the area on their way to a ranch, he finds himself unofficially on the case. But why all the interest from the Federal Police, when they have probably just ditched the heat and dust of the outback for the coast? As the number of days the couple are missing climbs, DS Walker is joined by the girl's sister. A detective herself from Berlin, she is desperate to find her before it's too late.

Summer 1980: Despite the local superstition that the Bendy Man haunts the woods, three girls go into a Minnesota forest. Only one comes out, dead silent, her memory gone. The mystery of the Taken Ones captures the nation. Summer 2022: Cold case detective Van Reed and forensic scientist Harry Steinbeck are assigned a disturbing homicide—a woman buried alive, clutching a heart charm necklace belonging to one of the vanished girls. Van follows her gut. Harry trusts in facts. They’re both desperate to catch a killer before he kills again.

Met cop DI Rob Marshall is hot on the trail of the serial killer known as the Chameleon, who has abducted, tortured and killed a series of young women in Northwest London. As they close in, the Chameleon—who switches identity to get close to his victims—shoots Marshall’s partner and escapes.

Six minutes in the wrong place at the wrong time—that’s all it took to ruin Sydney detective Ted Conkaffey’s life. Accused but not convicted of a brutal abduction, Ted is now a free man—and public enemy number one. Maintaining his innocence, he flees north to keep a low profile amidst the steamy, croc-infested wetlands of Crimson Lake. There, Ted’s lawyer introduces him to eccentric private investigator Amanda Pharrell, herself a convicted murderer.

When 12-year-old Esther disappears on the way home from school in a small town in rural Australia, the community is thrown into a maelstrom of suspicion and grief. As Detective Sergeant Sarah Michaels arrives in town during the hottest spring in decades and begins her investigation, Esther’s tenacious best friend, Ronnie, is determined to find Esther and bring her home. When schoolfriend Lewis tells Ronnie that he saw Esther with a strange man at the creek the afternoon she went missing, Ronnie feels she is one step closer to finding her.

Detective Alan Auhl does things his own way - and gets results. He works cold cases now. Like the death of John Elphick - his daughters are still convinced he was murdered, the coroner not so sure. Or the skeleton that’s just been found under a concrete slab. Or the doctor who killed two wives and a girlfriend and left no evidence at all....

When Anna Crowe is killed in her sleep alongside her children, the quiet local community of Corbally is shocked. It’s also a chilling reminder of when her sister, Janey, disappeared as a baby, 29 years ago, never to be seen again. Detective Iris Locke is assigned to the case, and, after a year undercover which ended in failure when her cover got blown, she’s desperate to make her mark - and to live up to the reputation of her ex-cop father, the former head of the Limerick Murder Squad.

DI Kate Young is on leave. She’s the force’s best detective, but her bosses know she’s under pressure, on medication and overcoming trauma. So after her bad judgement call leads to a narrowly averted public disaster, they’re sure all she needs is a rest. But when Staffordshire Police summon her back to work on a murder case, it’s a harder, more suspicious Kate Young who returns. With a new ruthlessness, she sets about tracking down a clinical, calculating serial killer who is torturing victims and leaving clues to taunt the police.

When a young woman is found brutally murdered in her own apartment with an intricate pattern of lines carved into her face, Copenhagen police detectives Jeppe Korner and Anette Werner are assigned to the case. Soon, they establish a link between the victim, Julie Stender, and her landlady, Esther de Laurenti, who’s a bit too fond of drink and the host of raucous dinner parties with her artist friends. Esther also turns out to be a budding novelist - and when Julie turns up as a murder victim in the unfinished mystery she’s writing, the link between fiction and real life grows.

Starting a new life in Snowdonia was always DI Ruth Hunter's dream. Until a twisted killer turned it into her worst nightmare. Detective Inspector Ruth Hunter lives with the pain of her partner’s mysterious and unsolved disappearance. About to hit 50, the veteran police officer trades in the crime-ridden streets of London for a more peaceful life in rural North Wales. But Ruth has barely settled into her new position in North Wales Police, when the body of a brutally murdered woman is discovered...with strange symbols carved into her skin.

An unidentified woman is found murdered on the North Norfolk Coastal Path and newly promoted Detective Sergeant Kate Brannon and Kings Lynn's CID have the task of figuring out whom, how, and why. A job that's made more difficult when every one of the 40 residents in the village has something to hide and answers her questions with a string of lies. Georgina Temple has her own secrets to keep, and her own reasons to keep them. But her growing attraction to Kate makes it increasingly difficult to keep them.

When a landslip on Pembrokeshire’s stunning coastal path reveals the harrowing remains of two bodies, ex-DCI Evan Warlow’s quiet retirement is shattered.